<template>
  <li :style="active" @mouseover="handleEnter(true)" @mouseleave="handleEnter(false)" >
    <label>
      <input type="checkbox" style="background-color: #9d9d9d" v-model="todo.complete"/>
      <span>{{todo.title}}</span>
    </label>
    <button class="btn btn-danger" v-show="isShow" @click="delItem">删除</button>
  </li>
</template>

<script>
export default {
  name: 'TodoItem',
  props: {
    todo: Object,
    index: Number,
    delTodo: Function
  },
  data () {
    return {
      isShow: false,
      active: 'background-color: write'
    }
  },
  methods: {
    handleEnter (flag) {
      console.log(flag)
      if (flag) {
        this.active = 'background-color: #9d9d9d'
        this.isShow = true
      } else {
        this.active = 'background-color: white'
        this.isShow = false
      }
    },
    delItem () {
      const {todo, index, delTodo} = this
      if (window.confirm(`确认删除${todo.title}吗？`)) {
        delTodo(index)
      }
    }
  }
}
</script>

<style scoped>

li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}
.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

</style>
